反应详情

To a solution of (R)-2-((2-cyano-3-nitrophenoxy)methyl)piperidinium 2,2,2-trifluoroacetate (Example 16c, 1.12 g, 2.99 mmol) in dichloromethane (5 mL), was added triethylamine (420 uL, 3.01 mmol). To that mixture was added a suspension of 4-nitrophenyl pyridin-4-ylmethylcarbamate (Example 27d, 980 mg, 3.59 mmol) in dichloromethane (5 mL), followed by triethylamine (420 uL, 3.01 mmol). After stirring for 23 h at room temperature, additional portions of 4-nitrophenyl pyridin-4-ylmethylcarbamate (980 mg, 3.59 mmol) and triethylamine (420 uL, 3.01 mmol) were added, and the resulting reaction mixture was stirred for 1 h, at which time it was poured into water, and washed successively with saturated aqueous NaHCO3 water and brine, dried over MgSO4, filtered, concentrated and purified by flash chromatography (0-100% ethyl acetate in hexanes followed by 0-10% methanol in dichloromethane) to provide (R)-2-((2-cyano-3-nitrophenoxy)methyl)-N-(pyridin-4-ylmethyl)piperidine-1-carboxamide (365 mg, 32%). MS=396 (MH+).

1. additionTo that mixture was added
2. customthe resulting reaction mixture
3. stirringwas stirred for 1 h, at which time it
4. washwashed successively with saturated aqueous NaHCO3 water and brine
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. custompurified by flash chromatography (0-100% ethyl acetate in hexanes followed by 0-10% methanol in dichloromethane)